{"product_id":"besam-rdb-654184-replacement-battery-288v-2000mah-ni-mh","title":"Besam RDB 654184 Automatic Door Replacement Battery 28.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBesam RDB 654184 — 28.8V Ni-MH Replacement Battery (80100206)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 28.8V 2000mAh Ni-MH battery for the Besam RDB 654184 automatic door operator. It powers the backup system that keeps the door functional when mains power fails. It replaces OEM part number 80100206 directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRDB 654184 backup circuit fit:\u003c\/strong\u003e\n    The Besam RDB 654184 controller uses a 28.8V Ni-MH pack to match the voltage rail the backup circuit monitors. A mismatched voltage causes the controller to reject the battery or fail to switch over during a mains failure. This pack meets that spec.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a simulated mains-fail event. The BMS handed off cleanly to the backup circuit and the controller held its door position programming throughout the discharge cycle. No fault codes were triggered on restore.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install verification:\u003c\/strong\u003e\n    After installing the backup battery, manually trigger a power-fail test during a low-traffic period. Automatic door backup batteries must be tested at installation to confirm they can complete a full door cycle under load — do not leave verification until an actual outage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating during mains failure on the RDB 654184\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe RDB 654184 backup circuit checks for a minimum charge threshold before it will engage. If the installed battery sat unused for months, self-discharge in Ni-MH cells can drop voltage below that threshold — the controller sees the battery as absent or faulted. Charge the pack for a full 24 hours before installation, then confirm the backup LED on the controller shows a ready state before closing the job. A pack reading below 24V at rest after charging indicates a failed cell and the pack should be replaced.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing its programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe RDB 654184 stores door travel limits and speed parameters in volatile RAM backed by the battery. When the backup battery is depleted, even a brief mains interruption wipes that configuration. This symptom — door opening to the wrong position or stopping mid-cycle after a power event — almost always traces back to a battery that can no longer hold charge, not a controller fault. Replace the backup battery, allow a full charge cycle, then re-run the door commissioning procedure to re-teach travel limits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053461594,"sku":"BWCS-BRD654SL-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053494362,"sku":"BWCS-BRD654SL-2","price":116.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053527130,"sku":"BWCS-BRD654SL-3","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BRD654SL-1.webp?v=1777949402","url":"https:\/\/batteryweb.com\/products\/besam-rdb-654184-replacement-battery-288v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}